Coretest Blog — Core Analysis & Lab Equipment Insights

September 11, 2026
How a staged flash test works in the laboratory: primary separation, low-pressure flash of the retained liquid, gasometry, condensate recovery and a closed material balance, with a worked example.

administrator July 28, 2026

administrator July 28, 2026

administrator July 28, 2026

Coretest July 25, 2026
How the pore fraction of a core is measured, the equations behind each method, and the porosity ranges you should expect by rock type.

Coretest July 23, 2026
Five laboratory methods measure gas permeability across ten orders of magnitude, from steady-state Darcy flow to pulse decay on nanodarcy shale. None covers the whole range, and the physics that limits each is worth knowing before you choose an instrument.

Coretest June 21, 2026
Gas recombination is not a "measurement" in the same sense as a CCE or CVD experiment: it is the sample-preparation and quality-control step that creates the live reservoir fluid on which every subsequent gas-condensate or wet-gas PVT study depends.

Coretest June 21, 2026
The Gas Flash test takes a sample of reservoir gas at reservoir pressure and temperature and subjects it to a single, abrupt pressure reduction to a defined flash pressure (separator or atmospheric).

Coretest June 21, 2026
The Gas Depletion test reproduces, at the cell scale, the non-equilibrium material-balance history that a dry or wet gas reservoir undergoes as it is produced down its decline curve.

Coretest June 21, 2026